Apparatus for injection of liquid medicine into drinking water in a conduit



J. W. GOFF APPARATUS FOR INJECTION OF LIQUID MEDICINE INTO DRINKING WATER IN A CONDUIT Sept. 16, 1952 2 SHEETS-SHEET 1 Filed Oct. 19, 1949 Sept. 16, 1952 J. w. GOFF 2,610,643

APPARATUS FOR INJECTION OF LIQUID MEDICINE INTO DRINKING WATER IN A CONDUIT Filed Oct. 19, 1949 2 Sl-IEETS-SHEET 2 fizaezziw" af0727z W 6 0/? y flaw/ ays drawings, thelnui neral I infdica Patented Sept. 16, 1952 2310,1543 mmcnom elitism? mongngmro DRINKING'WATER IN mme Mydnveiitio'nfrelates generally-to separatesie; injectingineasured amounts been urn-me ore specific-any, the inventio'n'consists "i ap paratuscon-trolled by the now o" nuie tnroue h said ceneuit ror' injecting other liquid thereinto in-exact-predetermined aniounts. 7

an the watering "oi certain domestic animals, such 'as poultryfandthe-like, it is -"sometiiries'= desirable "a-ndfnecessary'to add certain medications to 'the drinking water 'in' accurately-measured proportions. In {some instances, where water consumption is 'relatively pid, an appreciable amount or time is consumed in the manual mixmg of sufficient water" and medicine to provide anfadequate 'siippl y; -Hnc'e-, the principal object of myinvefition isthe provisidn oi apparatus for automaticallysupplying to the drink liquiclfa relatively *aecuratemroportion of fiuid' tobe mined therewith and rriixingthefsainep -A-nothe'r highlyfiinport'ant' bje'ct ofmyinvention is the-provision of automatic' meanswhereby the supply o f medicine' or mix tobe"addedtb the drink lic'iuid iscontroIIed by the-"quantitymfthe drink-'liquid suppliedt P i-' 1 A still further object of my invention isthe provision of switch means operated i'by' theiflow of water towarda mixing: tank'ior energizing motor-driven pumping mechanism, whereby to deliver medicinel'to. the. water, and:- other switch means-forzdeenei'gizing the .piimping'mechanisin, operatedby said pump mechanism.

Still'another object of; my inventionis the provision-- of apparatus as set forth which is; simple: andinexpensive 1 to manufacture andginstall, which is, eificient in operation and durable infuse.

Other; highly important objects and ,advantages of my invention will become apparent from the following; detailed specification, appended claims and attached drawings. M I Referring to the drawings in which; like char,- acters indicate like-parts throughout the several views: I Fig. 1 is a view in-plan' of mynovel mixing apparatus, some parts being b rokeniaway and some parts being shown in section;

P 2 is; a fragmentary View""in 'sideelevation of theliquid-flowmeasuring device of thy invention, someparts being broken awa and seine partsldeing'showninfsectionfand a Referring WithQgra-ter particularityjto the tesa'siviell'fiu'id conduit "or pipe'adaptdto' 'omfictedto' a. source of} water under T pressure; not'shown; Inti'posed inthesefvie conduit] is a eohventieflai in 'transitthrough a "ondiiit; I

wateririet'er 1 2 comprising a base portion 3 and ahead 4. The base-portions comprises the usual fluid 'veIocitv'operated mot'or -h'aving "a 'motor shaitB connected to a countershaft fi hy amnion is onnect'ed to an outlet l 5 the miizingntank I 2 and: "may be assumed "to conn'ect: the mixing tank I 2 "to a drinking contaiiier 'i'n thecnature of a trough I or the 'like, "not shown. Interpo'sedrin the service conduit 1 betweenethe :ineter- 21 "and theflnixin'g tank I 2 is: a conventional check-valve l 6 "and a manually-operated shut-off valve H.

For injecting a predetermined 'quantityof medicine or the-like toth'e' drinking'water as the water flows-through the. service; conduit l:, -,=I.; pro vide-an. inn ectio'nzpump 178 including a cylindrical chamber 'IQand-ajpuinp piston 2a. The, pump i8jre'ceive's m'edic'inefrom a reservoir 2! through conduitmeans 22 inwhichis interpo'seda spring;-

deliver measured j quantities of medicine to v the service conduit. I; through: aninjection conduit-=24 communicating with. the -servicev conduit 1 by means of a connection *25 between theq check valve lG'and the shut-oifvalve fl. A sprin'g pressedcheck valve 26 is: contained intheout; letsportion'of thepumphousing i8; I The--punip:rpiston "20is driven by an electric motor 2 I I through'conne'ctions including a worm 28" on the-:sha-ft'ofi the motor '21, a cooperating worm wheel 29 fastonajaclgshaftddasecond worm 31; also fast onthe jackshaft '3ll,--anda-cooperating, worm wheel 32 rpinned or'otherwise secured to a shaft? 33 journaled in. -bearings. 31i; Crank wheel 354s rigidly secured to one end or. theshaft '33 andis provided with l a crank. pin- 31$ to which is-pivota-lly secured one end o ff atpitma'n arm 31 having 113510151361 end pivotallv secured'lto the outer; end of the piston plunger 2 0, as" ind'i cated at--38. I .7 I Operation of the I motor 21' is controlled apair of :tWo positionswitches 39 "ammo "and actuating {ineclfianism "therefor iidw 'tofne described..- Thejswitch'39'is'inoiinted in the. h old portion 4,}0'1'thewater'nieter 2 bymeans o 'f bracketdr the like 4]: and is 'olvideld T actuator: member 42 which .is.' engageahlegw cam 43rigid1'y eeurwtothenountershafv avin rrieshing en agement with :2; :gearqa.

engagement with a bevel pinion 50 pinned orotherwisesecured to the end of the shaft 33 opposite the crank wheel 35 thereof. It will be seen,

by reference to Figs. 1 and 3, that the cam 41 is provided with a pair of diametrically opposed camrning portions and 52 with intervening dwell surfaces 53 and 54.

By reference to Fig. 3, it will be noted that the 4 circuit to the motor 2'! is then broken and the motor 21 deenergized to stop the pumping operation. It should be noted that the cam 43 rotates at a much slower speed than the cam 41 so that the circuit is not broken between the contacts 55 and 5'! of the switch 39 until after the circuit is broken in the switch 40. The switch 43 is of the type wherein the movable contact arm 65, upon engagement of the actuator thereof with either of the cam surfaces 5! or 52, will snap from one switch-closed position to the other. After the switch arm Gflhas been moved into engagement with the contact 59, continued rotation of the r 7 cam 43 will cause the switch arm 51 to engage the switch 39 comprises a pair of stationary contacts.

55 and 56 and a movable contact armfilto which the cam-engaging member 42 is's'ecured. Likethe, cam-engaging member 46 is mounted. The

contacts 55 and 58 are interconnected by a lead 6.] and the contacts 55 and byia lead 62.

A source of potential is indicated by power lines 63 and 64,'the former of-which is connected to the switch arm 51 by a lead 55 having interposed therein-a manually-operated control switch 56, and the latter of which is connected to the motor 21 by a leadGl. Another lead 58 extends from the motor 27 to the movable switch arm 60 of the switch 49... j a

Operation of my improved injecting. apparatus is carried out in the following manner, to wit: Assuming that the valve I1 is open and the switch 59 are interconnected 56 is closed, water flows through the service conduit I in the meter 2 toward the mixing tank l2, causing the fiuid'motor mechanism within the '42 has moved to one extreme or the other of its movement, as shown in Fig; 3, to one of the dip portions 45 of the cam, the switch arm 51 engages one of-the stationary contacts of theswitch 39. For the purpose of the present example, the switch arm 51 engages the stationary contact 55 to close a first circuit from the power line 53 through lead '55 and interposed switch 55, lead 6| closed switch contacts 58 and-55, leads 53 and 51 to the power line 54, whereby to energize the motor 21. Operation of the motor 2'! causes the pump piston to reciprocate withinthe chamber IQ of the pump IS, the suction stroke thereof permitting closing of the check valve and opening the check valve 23 to permit the medicine or like fluid to be drawn into the chamber 19 from the reservoir 2|. The pressure stroke of the piston 20, in a direction from'the left toward the right with respect to Fig. 1, permits thecheck valve 23 to close and opens the check valve 25, forcing medicine through the injection conduit 24 to the service conduit I, whereby to mix the medicine with the water flow ing through the injection conduit 24 to the service conduit By further reference to Fig. 3, it will be seen that the actuating member 45 is in engagement with the dwell portion 54 of the cam 41. Operation of "the pump will continue until'the cam 41 has rotated in a clockwise direction sufficiently to cause engagement between the actuator member 46 and the cam surface 5|, whereby to break contact between the stationary contact 58 and the contact arm 60. The first stationary switch contact 56, thereby establishing a second circuit through the motor 21 through .the leads 65, 52,- 88. and 61. The motor21wil1then rotate'the cam 41, whereby to open the second circuitafter a second predetermined quantity of medicine has been're-injected' into the service conduit l by the pump I8. Assuming that the flow of Water through the service conduit i is constant-the amount of medicine injectedthereinto by the pump 18 may be varied in a number of different ways such as, for instance, changing the stroke of the piston plunger 28 by moving the crank 36 radially inwardly or outwardly of the crank wheel 35. When it is desired to supply water to the tank [2, without an injection of medicine, it is but necessary to open the manual control switchGG to render the circuits through the motor 27 and switches 33 and 43 inoperative. The check valve [6 interposed in the service conduit l between the connection 25 and the water meter 2 prevents medicated water from entering the water meter 2 and possible consequent damage to the mechanism thereof when the shut-off valve I1 is closed.

'My invention has been thoroughly tested and found to be fully adequate for the accomplishment of the objectivesset forth and while I have disclosed a commercial embodimentof my apparatusitwill be understood that the same is capable of modification without departure from the spirit and scope of the invention as defined in the claims.

What I claim is:

'1. In an apparatus of the-class described. a service conduit adapted to be connected at one end to a source of water under pressure and at its other end to a drinking container, 'a reservoir adapted to contain a treating solution, an injection conduit leading from the reservoir to the service conduit, an injection pump interposed in said inj ection conduit, an electric motor for operating the pump, two circuits for said-motor, first and second switches associated with and jointly controlling each of said circuits. said switches having corresponding closed positions wherein they are serially connected in and close one of said circuits and having other corresponding closed positions wherein they are serially connected in and close the other of said circuits, a fluid flow-operated actuator for the first'switch for shifting the same alternately and repeatedly from one of its said closed positions to another thereof, said fluid flow operated actuator comprising a fluid velocity operated motor associated with the service conduit and driven by fluid flowing therethrough and an actuator for the second switch shifting the same alternately and repeatedly from one of said positions to another thereof and comprising said electric motor, the electric motor operated actuator for the second switch shifting the'said second switch from'one 2,810,848 5 closed position to another at a rate greater than REFERENCES CITED of the Switch whereby the pump The following references are of record in the ating motor will start responsive to each shiftin m f this p of one of the switches and will stop responsive to each such shifting of the other of the switches. 5 UNITED STATES PATENTS 2. The structure defined in claim 1 in further Number Name Date combination with a mixing tank connected to the 1,808,804 Baldner June 9. 1931 service conduit at a place beyond the injection 2,251,939 McCoy Aug. 19, 1941 conduit.

JOHN W. GOFF. 10 

